Technical Specifications
Issue 8.0 July 2002
10-47
External Synchronization Interface Reliability Specifications
DS3/EC-1 Channel Unavailability (hardware only)
— FT-2000 OC-48 Add/Drop-Rings
*
0.37 minutes/year,
Terminal for 2-Fiber Rings (equipped with DS3
and/or STS1E interfaces)
per DS3 channel
— 566 mile, 16-node ring circumference
†
........... 102 minutes/year,
(DS3/STS1E channel traversing 9 FT-2000
OC-48 Add/Drop-Rings Terminals)
per DS3/STS1E channel
OC-3/IS-3 Channel Unavailability (hardware only)
— FT-2000 OC-48 Add/Drop-Rings* .................. 0.0002 minutes/year,
Terminal for 2-Fiber Rings (equipped with
protected OC-3/IS-3 interfaces
per OC-3/IS-3 channel
— FT-2000 OC-48 Add/Drop-Rings* .................. 4.9 minutes/year,
Terminal for 2-Fiber Rings (equipped with
unprotected OC-3/IS-3 interfaces)
per OC-3/IS-3 channel
— 566 mile, 16-node ring circumference† ....... 1.20 minutes/year,
(OC-3 channel traversing nine FT-2000 OC-48
Add/Drop-Rings Terminals with protected
OC-3/IS-3 interfaces)
per OC-3/IS-3 channel
— 566 mile, 16-node ring circumference† .......... 11.00 minutes/year,
(OC-3 channel traversing nine FT-2000 OC-48
Add/Drop-Rings Terminals with unprotected
OC-3/IS-3 interfaces)
per OC-3/IS-3 channel
OC-12 Channel Unavailability (hardware only)
— FT-2000 OC-48 Add/Drop-Rings* 0.003 minutes/year,
Terminal for 2-Fiber Rings (equipped with
protected OC-12 interfaces)
per OC-12 channel
— FT-2000 OC-48 Add/Drop-Rings* 7.9 minutes/year,
Terminal for 2-Fiber Rings (equipped with
unprotected OC-12 interfaces)
per OC-12 channel
— 566 mile, 16-node ring circumference† 1.20 minutes/year,
(OC-12 channel traversing nine FT-2000 OC-48
Add/Drop-Rings Terminals with protected
OC-12 interfaces)
per OC-12 channel
— 566 mile, 16-node ring circumference† 17.00 minutes/year,
(OC-12 channel traversing nine FT-2000 OC-48
Add/Drop-Rings Terminals with unprotected
OC-12 interfaces)
per OC-12 channel
Silent Failure Unavailability*
— FT-2000 OC-48 Add/Drop-Rings 011 minutes/year
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